72420725

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:378

約数の個数: 36

約数和(自身を含む): 99186732

約数和(自身を除く): 26766007

約数列:

[1, 5, 13, 25, 61, 65, 169, 281, 305, 325, 793, 845, 1405, 1525, 3653, 3965, 4225, 7025, 10309, 17141, 18265, 19825, 47489, 51545, 85705, 91325, 222833, 237445, 257725, 428525, 1114165, 1187225, 2896829, 5570825, 14484145, 72420725]

約数ペア:

[(1, 72420725), (5, 14484145), (13, 5570825), (25, 2896829), (61, 1187225), (65, 1114165), (169, 428525), (281, 257725), (305, 237445), (325, 222833), (793, 91325), (845, 85705), (1405, 51545), (1525, 47489), (3653, 19825), (3965, 18265), (4225, 17141), (7025, 10309)]